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17 TESLA SUPERCONDUCTING MAGNET WITH MULTIFILAMENTARY SUPERCONDUCTORS.

Takeo, M., Funaki, K., Sato, S., Yamafuji, K., Iwakuma, M., Hiramatsu, M., Matsumoto, K. & Hamada, M., Jan 1 1987, In : IEEE Transactions on Magnetics. MAG-23, 2

Research output: Contribution to journalArticle

Superconducting magnets
Superconducting materials
Magnets
Quenching
Magnetic fields
8 Citations (Scopus)

Ablation dynamics of tin micro-droplet irradiated by double pulse laser used for extreme ultraviolet lithography source

Nakamura, D., Akiyama, T., Okazaki, K., Tamaru, K., Takahashi, A. & Okada, T., Dec 1 2008, In : Journal of Physics D: Applied Physics. 41, 24, 245210.

Research output: Contribution to journalArticle

Extreme ultraviolet lithography
Tin
Ablation
ablation
Laser pulses
DC-DC converters
Electric potential
Experiments
43 Citations (Scopus)

Abnormal quench process with very fast elongation of normal zone in multi-strand superconducting cables

Iwakuma, M., Kanetaka, H., Tasaki, K., Funaki, K., Takeo, M. & Yamafuji, K., Aug 1990, In : Cryogenics. 30, 8, p. 686-692 7 p.

Research output: Contribution to journalArticle

Superconducting cables
strands
cables
elongation
Elongation
48 Citations (Scopus)

Ac inductive measurement of intergrain and intragrain currents in high-tc oxide superconductors

Ni, B., Munakata, T., Matsushita, T., Iwakuma, M., Funaki, K., Takeo, M. & Yamafuji, K., Sep 1988, In : Japanese Journal of Applied Physics. 27, 9 R, p. 1658-1662 5 p.

Research output: Contribution to journalArticle

Oxide superconductors
Current density
current density
oxides
Magnetic flux
5 Citations (Scopus)

Ac loss and thermal runaway of 1 T cryocooler-cooled oxide superconducting pulsed coil

Miyazaki, H., Iwamoto, A., Iwakuma, M., Funaki, K., Hayashi, H. & Tomioka, A., Jun 1 2004, In : IEEE Transactions on Applied Superconductivity. 14, 2, p. 774-777 4 p.

Research output: Contribution to journalArticle

Oxides
coils
oxides
strands
Temperature
7 Citations (Scopus)

AC losses in a conduction-cooled LTS pulse coil with stored energy of 1 MJ for UPS-SMES as protection from momentary voltage drops

Kawagoe, A., Tsukuda, S., Sumiyoshi, F., Mito, T., Chikaraishi, H., Baba, T., Yokota, M., Ogawa, H., Hemmi, T., Abe, R., Nakamura, A., Okumura, K., Kuge, A. & Iwakuma, M., Jun 1 2008, In : IEEE Transactions on Applied Superconductivity. 18, 2, p. 783-786 4 p., 4497938.

Research output: Contribution to journalArticle

magnetic energy storage
Uninterruptible power systems
power supplies
Energy storage
alternating current
16 Citations (Scopus)

ac losses in circular disks of thin YBa2Cu3O7 films in perpendicular magnetic fields

Suenaga, M., Solovyov, V. F., Li, Q., Ye, Z., Wiesmann, H. J., Iwakuma, M., Fukui, M., Toyota, K., Funaki, F., Johansen, T. H., Shantsev, D. V. & Clem, J. R., Jul 1 2003, In : Journal of Applied Physics. 94, 1, p. 502-506 5 p.

Research output: Contribution to journalArticle

circumferences
thin films
magnetic fields
critical current
alternating current

Ac losses in superconducting parallel conductors in saturation case

Tanaka, H., Iwakuma, M. & Funaki, K., Mar 1 2002, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 7, 1, p. 13-18 6 p.

Research output: Contribution to journalArticle

Shielding
Critical currents
Induced currents
Magnetic flux
Experiments
13 Citations (Scopus)

AC loss properties in YBCO model coils for loss reduction

Okamoto, H., Hayashi, H., Tomioka, A., Konno, M., Owa, M., Kawagoe, A., Sumiyoshi, F., Iwakuma, M., Suzuki, K., Izumi, T., Yamada, Y. & Shiohara, Y., Sep 15 2008, In : Physica C: Superconductivity and its applications. 468, 15-20, p. 1731-1733 3 p.

Research output: Contribution to journalArticle

Tapes
tapes
alternating current
coils
filaments
1 Citation (Scopus)

AC loss properties of Bi-2212 Rutherford-type cables

Fukuda, Y., Matsumura, M., Kajikawa, K., Iwakuma, M., Funaki, K., Hasegawa, T., Kasahara, H., Akita, S. & Sakaguchi, H., Sep 1 2001, In : Physica C: Superconductivity and its applications. 357-360, SUPPL. 1, p. 1263-1266 4 p.

Research output: Contribution to journalArticle

cables
alternating current
Cables
strands
filaments

AC-loss properties of Bi-2223 multifilamentary taped wires with a central insulation layer

Funaki, K., Nogami, K., Kawasaki, M., Iwakuma, M., Ayai, N., Kobayashi, S., Kikuchi, M. & Hayashi, K., Nov 1 2011, In : Physica C: Superconductivity and its applications. 471, 21-22, p. 1110-1113 4 p.

Research output: Contribution to journalArticle

insulation
Insulation
alternating current
wire
Wire
2 Citations (Scopus)

AC loss properties of Cu-sheathed MgB2 composites with Nb barriers

Funaki, K., Sueyoshi, T., Kajikawa, K., Iwakuma, M., Tanaka, K., Okada, M., Kumakura, H. & Hayashi, H., Feb 1 2008, In : Journal of Physics: Conference Series. 97, 1, 012316.

Research output: Contribution to journalArticle

filaments
alternating current
composite materials
liquid helium
coils
14 Citations (Scopus)

AC loss properties of MgB2 multifilament wires

Tanaka, K., Funaki, K., Sueyoshi, T., Sasashige, Y., Kajikawa, K., Iwakuma, M., Okada, M., Kumakura, H. & Hayashi, H., Sep 1 2008, In : Superconductor Science and Technology. 21, 9, 095007.

Research output: Contribution to journalArticle

alternating current
wire
Wire
hollow
filaments
5 Citations (Scopus)

AC Loss Properties of Stacked REBCO Superconducting Tapes

Ueno, T., Iwakuma, M., Ito, T., Yun, K., Adachi, K., Tomioka, A., Hase, Y., Konno, M., Izumi, T., Machi, T. & Ibi, A., Jun 2017, In : IEEE Transactions on Applied Superconductivity. 27, 4, 7833112.

Research output: Contribution to journalArticle

Superconducting tapes
tapes
alternating current
Tapes
curves
18 Citations (Scopus)

AC loss properties of YBCO superconducting tapes exposed to external Ac magnetic field

Iwakuma, M., Nigo, M., Inoue, D., Kiss, T., Funaki, K., Iijima, Y., Saitoh, T., Yamada, Y. & Shiohara, Y., Jun 1 2005, In : IEEE Transactions on Applied Superconductivity. 15, 2 PART II, p. 1562-1565 4 p.

Research output: Contribution to journalArticle

Superconducting tapes
tapes
alternating current
Magnetic fields
magnetic fields
1 Citation (Scopus)

Ac loss properties of YBCO superconducting tapes fabricated by IBAD-PLD technique

Iwakuma, M., Nigo, M., Inoue, D., Miyamoto, N., Funaki, K., Iijima, Y., Saitoh, T., Yamada, Y., Izumi, T. & Shiohara, Y., Jun 1 2006, In : Journal of Physics: Conference Series. 43, 1, p. 154-157 4 p., 039.

Research output: Contribution to journalArticle

tapes
curves
magnetization
temperature
temperature dependence
33 Citations (Scopus)

AC loss properties of YBCO superconducting tapes fabricated by IBAD-PLD technique

Iwakuma, M., Toyota, K., Nigo, M., Kiss, T., Funaki, K., Iijima, Y., Saitoh, T., Yamada, Y. & Shiohara, Y., Oct 1 2004, In : Physica C: Superconductivity and its applications. 412-414, SPEC. ISS., p. 983-991 9 p.

Research output: Contribution to journalArticle

Superconducting tapes
Ion beam assisted deposition
Pulsed laser deposition
Tapes
tapes
1 Citation (Scopus)
Frequency modulation
DC-DC converters
Noise abatement
Controllers
Modulation
3 Citations (Scopus)

AC operating test results for a conduction-cooled HTS coil

Tasaki, K., Kuriyama, T., Nomura, S., Sumiyoshi, Y., Hayashi, H., Kimura, H., Iwakuma, M. & Funaki, K., Jun 1 2004, In : IEEE Transactions on Applied Superconductivity. 14, 2, p. 731-734 4 p.

Research output: Contribution to journalArticle

alternating current
coils
conduction
Tapes
Thermodynamic stability
7 Citations (Scopus)

A coupled map lattice model for oscillatory growth in electrodeposition

Sakaguchi, H., Yoshida, T., Nakanishi, S., Fukami, K. & Nakato, Y., Nov 1 2006, In : journal of the physical society of japan. 75, 11, 114002.

Research output: Contribution to journalArticle

electrodeposition
flat surfaces
electrodes
2 Citations (Scopus)

AC over-current test results of YBCO conductor for YBCO power transformer with fault current limiting function

Tomioka, A., Otonari, T., Ogata, T., Iwakuma, M., Okamoto, H., Hayashi, H., Iijima, Y., Saito, T., Gosho, Y., Tanabe, K., Izumi, T. & Shiohara, Y., Nov 1 2011, In : Physica C: Superconductivity and its applications. 471, 21-22, p. 1367-1373 7 p.

Research output: Contribution to journalArticle

Electric fault currents
Power transformers
transformers
Tapes
alternating current
14 Citations (Scopus)

AC particle-triggered corona discharge in low pressure SF6 gas

Negara, Y., Yaji, K., Imasaka, K., Hayashi, N., Suehiro, J. & Hara, M., Feb 1 2007, In : IEEE Transactions on Dielectrics and Electrical Insulation. 14, 1, p. 91-100 10 p.

Research output: Contribution to journalArticle

Discharge (fluid mechanics)
Gases
Electric breakdown
Electric potential
Electron affinity
37 Citations (Scopus)

Ac susceptibility measurement of magnetic markers in suspension for liquid phase immunoassay

Enpuku, K., Tamai, Y., Mitake, T., Yoshida, T. & Matsuo, M., Aug 1 2010, In : Journal of Applied Physics. 108, 3, 034701.

Research output: Contribution to journalArticle

immunoassay
markers
liquid phases
magnetic permeability
beads
10 Citations (Scopus)

AC susceptibility of magnetic fluid in nonlinear brownian relaxation region: Experiment and comparison with numerical simulation

Yoshida, T., Ogawa, K., Enpuku, K., Usuki, N. & Kanzaki, H., May 1 2010, In : Japanese journal of applied physics. 49, 5 PART 1, p. 530011-530017 7 p.

Research output: Contribution to journalArticle

Magnetic fluids
alternating current
Nanoparticles
magnetic permeability
Fokker Planck equation
1 Citation (Scopus)

Active damping for grid-connected LCL filter based on optimum P+R controller design using injected grid current feedback only

Gaafar, M. A. & Shoyama, M., 2014, In : Unknown Journal. 2014-January, January, 6972162.

Research output: Contribution to journalArticle

damping
Capacitors
Damping
filter
Feedback
10 Citations (Scopus)

A Current Sharing Method Utilizing Single Balancing Transformer for a Multiphase LLC Resonant Converter with Integrated Magnetics

Noah, M., Endo, S., Ishibashi, H., Nanamori, K., Imaoka, J., Umetani, K. & Yamamoto, M., Jun 2018, In : IEEE Journal of Emerging and Selected Topics in Power Electronics. 6, 2, p. 977-992 16 p.

Research output: Contribution to journalArticle

Stars
Magnetic circuits
Inductance
Transistors
Capacitors
2 Citations (Scopus)

Adaptor polymerase chain reaction for single molecule amplification

Nakano, M., Komatsu, J., Kurita, H., Yasuda, H., Katsura, S. & Mizuno, A., Jan 1 2005, In : Journal of Bioscience and Bioengineering. 100, 2, p. 216-218 3 p.

Research output: Contribution to journalArticle

Polymerase chain reaction
Amplification
DNA
Polymerase Chain Reaction
Molecules
4 Citations (Scopus)

A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators

Dousoky, G. M., Shoyama, M. & Ninomiya, T., Jul 2010, In : Journal of Power Electronics. 10, 4, p. 342-350 9 p.

Research output: Contribution to journalArticle

Atmospheric spectra
Switching frequency
Signal interference
Industrial electronics
Electric potential

A family of single-switch ZVS-CV DC-to-DC converters

Mizoguchi, T., Ninomiya, T., Ohgai, T. & Shoyama, M., Jan 1 1996, In : IEICE Transactions on Communications. E79-B, 6, p. 849-855 7 p.

Research output: Contribution to journalArticle

Zero voltage switching
Pulse width modulation
Switches
Electric commutation
Electric potential
Current voltage characteristics
alternating current
slabs
electric potential
Magnetic fields
19 Citations (Scopus)

Aligned growth of ZnO nanowires and lasing in single ZnO nanowire optical cavities

Guo, R. Q., Nishimura, J., Matsumoto, M., Higashihata, M., Nakamura, D., Suehiro, J. & Okada, T., Mar 1 2008, In : Applied Physics B: Lasers and Optics. 90, 3-4, p. 539-542 4 p.

Research output: Contribution to journalArticle

lasing
nanowires
cavities
optical pumping
gases
36 Citations (Scopus)

Aligned growth of ZnO nanowires by NAPLD and their optical characterizations

Guo, R., Matsumoto, M., Matsumoto, T., Higashihata, M., Nakamura, D. & Okada, T., Sep 30 2009, In : Applied Surface Science. 255, 24, p. 9671-9675 5 p.

Research output: Contribution to journalArticle

Laser ablation
Pulsed lasers
Nanowires
Nanoparticles
Semiconductor lasers
4 Citations (Scopus)

Allowable power analysis and comparison of high power density DC-DC converters with integrated magnetic components

Kimura, S., Kawakami, T., Nanamori, K., Imaoka, J. & Yamamoto, M., Jan 1 2017, In : IEEJ Journal of Industry Applications. 6, 6, p. 463-472 10 p.

Research output: Contribution to journalArticle

DC-DC converters
Electric network topology
Saturation magnetization
1 Citation (Scopus)

Alteration of egg character in the wemi mutation of Bombyx mori by the application of 20-hydroxyecdysone

Kawaguchi, Y., Iwakuma, M., Banno, Y. & Koga, K., 1998, In : Journal of Sericultural Science of Japan. 67, 1, p. 31-35 5 p.

Research output: Contribution to journalArticle

Ecdysterone
Bombyx
ecdysterone
Hormones
Bombyx mori
8 Citations (Scopus)

A Magnetic Design Method Considering DC-Biased Magnetization for Integrated Magnetic Components Used in Multiphase Boost Converters

Imaoka, J., Okamoto, K., Kimura, S., Noah, M., Martinez, W., Yamamoto, M. & Shoyama, M., Apr 2018, In : IEEE Transactions on Power Electronics. 33, 4, p. 3346-3362 17 p., 7932878.

Research output: Contribution to journalArticle

Magnetization
Electric current control
Power converters
Switching frequency
Saturation magnetization

An AC MPPT with Active/Reactive Power Control Feature for Single-Stage Three-Phase Grid-Connected Photovoltaic VSIs

Dousoky, G. M. & Shoyama, M., Feb 25 2017, In : Electric Power Components and Systems. 45, 4, p. 442-450 9 p.

Research output: Contribution to journalArticle

Reactive power
Power control
Controllers
Electric potential
Digital signal processors
10 Citations (Scopus)

Analysis of abnormal phenomena caused by synchronous rectifiers in a paralleled converter system

Kohama, T., Ninomiya, T., Tymerski, R. & Shoyama, M., Jul 1 2000, In : IEEE Transactions on Power Electronics. 15, 4, p. 670-680 11 p.

Research output: Contribution to journalArticle

Energy dissipation
Electric potential
Experiments

Analysis of a series-resonant converter with ZVS-PWM control

Tanaka, H., Yamane, T., Ninomiya, T., Shoyama, M. & Zaitsu, T., Jan 1 2000, In : Electronics and Communications in Japan, Part II: Electronics (English translation of Denshi Tsushin Gakkai Ronbunshi). 83, 1, p. 59-65 7 p.

Research output: Contribution to journalArticle

Zero voltage switching
pulse duration modulation
Pulse width modulation
converters
Switching frequency
1 Citation (Scopus)
Linear motors
Vibration control
Induction motors
Propulsion
Harmonic analysis
Linear motors
Force control
Vibration control
Induction motors
Propulsion
21 Citations (Scopus)

Analysis of output capacitor voltage ripple in multi-phase transformer-linked boost chopper circuit

Imaoka, J., Yamamoto, M., Nakamura, Y. & Kawashima, T., Jan 1 2013, In : IEEJ Journal of Industry Applications. 2, 5, p. 252-260 9 p.

Research output: Contribution to journalArticle

Capacitors
Networks (circuits)
Electric potential
Power converters
Cooling systems
73 Citations (Scopus)

Analysis of PD-generated SF6 decomposition gases adsorbed on carbon nanotubes

Ding, W., Hayashi, R., Ochi, K., Suehiro, J., Imasaka, K., Hara, M., Sano, N., Nagao, E. & Minagawa, T., Dec 1 2006, In : IEEE Transactions on Dielectrics and Electrical Insulation. 13, 6, p. 1200-1207 8 p.

Research output: Contribution to journalArticle

Partial discharges
Carbon nanotubes
Decomposition
Chemical sensors
Gases
16 Citations (Scopus)

An array of interdigitated parallel wire electrodes for preparing a large-scale nanocomposite film with aligned carbon nanotubes

Sun, W., Tomita, H., Hasegawa, S., Kitamura, Y., Nakano, M. & Suehiro, J., Nov 9 2011, In : Journal of Physics D: Applied Physics. 44, 44, 445303.

Research output: Contribution to journalArticle

Carbon Nanotubes
Nanocomposite films
Carbon nanotubes
nanocomposites
carbon nanotubes
1 Citation (Scopus)

An Efficient Algorithm for Matrix-Valued and Vector-Valued Optimal Mass Transport

Chen, Y., Haber, E., Yamamoto, K., Georgiou, T. T. & Tannenbaum, A., Oct 1 2018, In : Journal of Scientific Computing. 77, 1, p. 79-100 22 p.

Research output: Contribution to journalArticle

Optimal Transport
Mass Transport
Efficient Algorithms
Mass transfer
Color Image Processing
17 Citations (Scopus)

An evolutionary algorithm for optimal damper placement to minimize interstorey-drift transfer function in shear building

Fujita, K., Yamamoto, K. & Takewaki, I., Sep 2010, In : Earthquake and Structures. 1, 3, p. 289-306 18 p.

Research output: Contribution to journalArticle

Evolutionary algorithms
Transfer functions
Damping
1 Citation (Scopus)

A new experimental technique to evaluate perpendicular-field losses of superconducting tape wires with meter-class length

Kajikawa, K., Nishimura, M., Moriyama, H., Iwakuma, M. & Funaki, K., Sep 1 2001, In : Physica C: Superconductivity and its applications. 357-360, SUPPL. 1, p. 1201-1204 4 p.

Research output: Contribution to journalArticle

Superconducting tapes
tapes
wire
Wire
coils
14 Citations (Scopus)

A New Single-Phase Five-Level Inverter Topology for Single and Multiple Switches Fault Tolerance

Aly, M., Ahmed, E. M. & Shoyama, M., Nov 2018, In : IEEE Transactions on Power Electronics. 33, 11, p. 9198-9208 11 p., 8253839.

Research output: Contribution to journalArticle

Fault tolerance
Switches
Topology
Short circuit currents
Industrial applications
1 Citation (Scopus)
Modulation
Electric potential
Temperature

An Investigation of size-reduction effects in high power density boost converters with a magnetic coupling

Aoto, S., Kimura, S., Imaoka, J. & Yamamoto, M., Jul 1 2015, In : IEEJ Transactions on Electronics, Information and Systems. 135, 7, p. 776-784 9 p.

Research output: Contribution to journalArticle

Magnetic couplings
Networks (circuits)
Capacitors
Hybrid vehicles
DC-DC converters